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STM32F100RC 数据表(PDF) 74 Page - STMicroelectronics

部件名 STM32F100RC
功能描述  High-density value line, advanced ARM-based 32-bit MCU
PDF  98 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F100RC 数据表(HTML) 74 Page - STMicroelectronics

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Electrical characteristics
STM32F100xC, STM32F100xD, STM32F100xE
74/98
Doc ID 15081 Rev 7
Figure 27.
I/O AC characteristics definition
5.3.15
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, RPU (see Table 43).
Unless otherwise specified, the parameters given in Table 46 are derived from tests
performed under the ambient temperature and VDD supply voltage conditions summarized
in Table 9.
Figure 28.
Recommended NRST pin
protection
1.
The reset network protects the device against parasitic resets.
2.
The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in
Table 46. Otherwise the reset will not be taken into account by the device.
ai14131
10%
90%
50%
tr(IO)out
OUTPUT
EXT ERNAL
ON 50pF
Maximum fr equency is achieved if (tr + tf) 2/3)T and if the duty cycle is (45-55%)
10%
50%
90%
when loaded by 50pF
T
tr(IO)out
Table 46.
NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIL(NRST)
(1)
1.
Guaranteed by design, not tested in production.
NRST Input low level voltage
–0.5
0.8
V
VIH(NRST)
(1)
NRST Input high level voltage
2
VDD+0.5
Vhys(NRST)
NRST Schmitt trigger voltage
hysteresis
200
mV
RPU
Weak pull-up equivalent resistor(2)
2.
The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to
the series resistance must be minimum
(~10% order)
.
VIN = VSS
30
40
50
k
Ω
VF(NRST)
(1)
NRST Input filtered pulse
100
ns
VNF(NRST)
(1)
NRST Input not filtered pulse
300
ns
DLG
670)[
538
1567 
9''
)LOWHU
,QWHUQDOUHVHW
—)
([WHUQDO
UHVHWFLUFXLW 



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